/clear: clear all messages from the current conversation /topic <topic>: set the topic of the current conversation /join <chat room ID>: join a new chat room /j <chat room ID>: join a new chat room /query <contact ID> [<message>]: open a private chat /msg <contact ID> <message>: open a private chat /nick <nickname>: change your nickname on the current server /me <message>: send an ACTION message to the current conversation /say <message>: send <message> to the current conversation. This is used to send a message starting with a '/'. For example: "/say /join is used to join a new chat room" /help [<command>]: show all supported commands. If <command> is defined, show its usage.